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Does atopy protect against enteric infections?

P N Black1

  • 1Department of Medicine, University of Auckland, Auckland, New Zealand.

Allergy
|December 4, 2004
PubMed
Summary
This summary is machine-generated.

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Individuals with atopy, a genetic predisposition to allergic diseases, show reduced oral tolerance to foods and gut microbes. This may explain increased food allergies but decreased susceptibility to certain childhood enteric infections.

Area of Science:

  • Immunology
  • Allergy and Asthma Research
  • Pediatric Allergy

Background:

  • Atopy, a genetic predisposition to allergic diseases like asthma, allergic rhinitis, and eczema, is highly prevalent despite associated morbidity.
  • Atopic individuals exhibit a reduced capacity for oral tolerance to ingested substances, including foods and gastrointestinal microorganisms.

Purpose of the Study:

  • To investigate the implications of impaired oral tolerance in atopic children regarding food allergies and susceptibility to enteric infections.

Main Methods:

  • The study focuses on the immunological mechanisms underlying oral tolerance in the context of atopy.
  • Comparative analysis of tolerance development to food antigens versus gastrointestinal microorganisms in atopic and non-atopic individuals.

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Main Results:

  • Atopic children are less tolerant to ingested foods, leading to a higher incidence of food allergy symptoms such as wheezing, rashes, and gastrointestinal issues.
  • Atopic children demonstrate reduced tolerance to gastrointestinal microbes, potentially offering protection against enteric infections in early life.

Conclusions:

  • The impaired oral tolerance in atopy contributes to both increased food allergies and a potential protective effect against certain childhood enteric infections.
  • Understanding these tolerance mechanisms may offer new therapeutic strategies for managing allergic diseases and infectious diseases in atopic populations.